Before the two left, Li Min took out a volume of physics and chemistry that he had compiled and gave them to Li Chunfeng.
Li Chunfeng just opened it and glanced at it, feeling overjoyed.
It turns out that this is science!
It turns out that science is so mysterious!
Science seems to be more interesting than divination.
Li Min then said: "Mr. Yuan can also read these two books, but remember not to tell them about it for the time being. Also, don't tell anyone about what happened here today."
Li Chunfeng said quickly: "Master, don't worry, we will definitely not tell anyone!"
Yuan Tiangang also said that he would keep it secret and would not reveal a single word about what happened during their meeting today.
After the two left, Li Min came to Liu Shan again and asked Liu Shan to tell the servants in the palace that they should not tell anyone about the flying birds they saw in Prince Liang's palace.
After receiving Li Min's instructions, Liu Shan hurriedly went down to do things.
In the following time, Li Min began to study ice making.
Making ice is actually not as simple or fast as Yuan Tiangang and Li Chunfeng make it seem.
In fact, as early as when Liu Shan came to report for the first time, Li Min had ordered people to make preparations behind him.
When saltpeter dissolves in water, it can indeed take away a lot of heat, but the heat taken away is actually limited.
At least, with the current temperature of more than 20 degrees, it is impossible to drop below freezing point all at once.
A one-time cooling can probably lower the temperature by more than a dozen degrees.
Therefore, as early as when Yuan Tiangang and Li Chunfeng arrived, Li Min secretly ordered people to use graded ice making and began to continuously cool down the water.
By the time Li Min performed the performance of condensing water into ice, the temperature of the water brought in had dropped below ten degrees.
It is for this reason that Li Min can quickly condense into ice after adding saltpeter.
Now that there is a saltpeter mine, ice can be made in the summer.
Of course, if it was just for his own enjoyment, Li Min would not need to buy all three mines rich in saltpeter ores.
The reason for doing this was that Li Min was planning to sell ice cubes.
Ice cubes are definitely a hot commodity in summer, and most wealthy families cannot afford them.
Only within the palace and those aristocratic families can use ice.
The ice they use is in ice cellars dug in advance, and they store the ice in winter.
Wait until summer before taking it out for use.
The cost of making ice cellars and storing ice cubes makes ice cubes extremely expensive.
Ordinary rich people simply cannot afford to build an ice cellar by themselves.
I can only buy some ice cubes during the hottest days.
Of course, the price of this ice cube is very expensive.
In summer, using saltpeter to make ice and then selling ice cubes is definitely a huge profit industry.
Of course, Li Min thought further. For example, simply selling ice cubes was still not the best choice.
If it can be used to make popsicles and ice cream, what price can it be sold for in Datang?
Um, okay, to be honest, summer is coming, and Li Min himself misses the taste of ice cream very much.
…
Cheng Chuliang has been playing like crazy recently. He is crazy about football.
Then friends who were familiar with Qin Huaiyu, Yuchi Gong and others joined their elder brother Cheng Chumo and others to form a second generation football team.
It has to be said that birds of a feather flock together and people flock together.
These second-generation ancestors are indeed in the same boat.
After they came into contact with football, they quickly fell in love with this passionate and exciting sport.
Next, the football team they formed continued to work together according to the method Li Min told them.
Their technology is also constantly improving.
Nowadays, football matches are quite popular in Chang'an City.
Establish large and small football teams.
The team formed by Cheng Chuliang and the others gave themselves a resounding name: If you don’t accept it, do it.
Well, these guys heard these eight words from Li Min's mouth. They felt that they were in line with their temperament, so they directly used the last four words as the team name.
If you don't accept it, join the team. Among the large and small teams nearby, the record is brilliant and invincible.
How lonely it is to be invincible!
At this time, Cheng Chuliang couldn't help but think of the scene when he was in Prince Liang's mansion and several of his friends were ravaged by the imperial guards.
How small-minded is this guy? How can he not avenge such a huge hatred?
Therefore, Cheng Chuliang took his dissatisfaction to join the team and asked Xue Rengui for a battle.
Xue Rengui, of course, would not take them to heart. Faced with their provocation, he confidently agreed.
As a result, the escort army was in an 11:0:0 formation, and if they were dissatisfied, they would attack the team in a 4:3:3 formation. If they were not convinced, the team would be ravaging them like crazy.
The final score actually reached an astonishing 117:35!
After winning by a huge margin, Cheng Chuliang and the others left proudly.
As for Prince Liang's team, they were so angry that they couldn't hold back their anger.
So Xue Rengui found Li Min and asked about the reason for their failure.
At this time, Li Min was busy making ice cream.
If you want to make ice cream, you first need milk. If you want to make milk, you first need cows.
And cows were a real rarity in the Tang Dynasty.
At least for a while, it's not easy to find.
Li Min could only settle for the next best thing, goat milk, or any cow or sheep that could be milked.
First, you need to find a suitable milk source. After you have milk, you can use milk, white sugar, etc. to make ice cream.
And Xue Rengui came here this time to ask for advice on how to win the football match. Li Min really didn't want to talk to him.
Considering that Xue Rengui was the first general under his command, Li Min was patient and explained some football skills to Xue Rengui.
This time, Li Min didn't hide his secrets. He even spent his money to search for some team members' cooperation skills and explained them to Xue Rengui.
After listening to Li Min's explanation, Xue Rengui suddenly realized it as if he had been enlightened.
It turns out that this is what happened. It seems that I did not lose unfairly some time ago.
After going down, Xue Rengui started training the football team according to the skills taught by Li Min.
In fact, although it seemed like the training of the football team, it delayed their training.
In fact, after the introduction of football games, the soldiers' enthusiasm for training actually increased.
Because the soldiers who can be selected into the Liang Prince's team are not fixed candidates, but must be the dozens of people who stand out the most in training.
Then these people will be constantly rotated.
Of course, other people can also spontaneously form a team to challenge the Liang Wangfu team.
Under this layer of selection, the training effect of soldiers has actually improved.